j john mccollum



` plate.

JOH MCCLLUM, OF NEW YORKQNA. Y.

` y GRAGKEEMACHINE.

Specification forming part of Letters Patent No.

8,828, dated March 23, 1852; Ressued May `31,

-cutters are forced down to cut the dough, to

yield or recede under the pressure and thereby prevent the sudden cut ofthe knives on the apron, and at the same time, keep them longer incontact with the apron to take the scraps, than would be the case if thebed plate was made permanently fast to the frame, and the knivessuddenly impinged upon it and then receded. But to describe my inventionmore particularly I will refer to the accompanying drawings forming apart of this schedule, the same letters in the several drawingsreferring to the same parts, wherever they occur.

Figure l is a front elevation of the machine through the plane fr, m,Fig. 2, omitting the fed roller, feed board Sao.; and

showing through the plane m2, m2 Fig. 3, a cut section of the same. Fig.2, is a side elevation of the machine. Fig. 3 is a plan view of the sameomitting the feed board, feed apron and cutters; and feed roller andclearer. Fig. 4 is a plan view of the bed Fig. 5 is an end view of thehed plate and pins and springs on which it rests.

Letter A, is the frame of the machine.

B, is the feed board, `for introducing the dough to the machine.

Letters C, C, are the kneading rollers, geared together, and driven bythe cog wheels D, D, at the side of the machine, and gearing into a cogwheel E, on the crank Shaft F. On the opposite end of this shaft is aily wheel G, having a slot H, cut in one of its arms, for the purpose ofattaching the end of a rod I, which at its back end is connected to acord J, winding about half way around a pulley K, on the end of theshaft of the back feed roller L, so that, by the adjusting of the rod I,in the slot, H, the feed (by means of the endless apron M, passingaround the roller N. at the front endA of the machine,) `may begraduated to different Sizes of crackers, or biscuits required to `loecut. Connected to the` crank shaft are also two connecting rods P, P.These rods are, at their lower ends, attached to the upper side of thecutters R, which are made in the usual manner, with ovals, squares, orother devices for cutting the various kinds of crackers, and prickers inconnection therewith. 4

Letter S, is the clearer, for the cutters. This clearer is a thin pla-teof metal and supported on posts T, T, secured into the upper side of thebed plate U, and through openings in which, the knives and prickers passto act upon the dough, and prevent it from following or lifting as theknives draw back from the bed plate. This bed plate U is supported uponthe heads of four pins V, V, cc., passing through shouldervpieces IV, W,&c., at opposite sides of the frame, for holding them in a verticalposition. Attached to these pins are spiral springs X, X. These springsare arranged on the pins between the upper and lower shoulder pieces,having one end secured to the pin, and the other resting upon one of theshoulder pieces, so that as the knives press down upon the apron and bedplate to cut the dough, they allow the bed plate and clearer attachedthereto, to yield or give back tov the pressure of the knives and followthem up as they are being drawn back, and thereby allow of a moregradual separation of the dough from the edges of the knives andprickers..

The operation of mymachine is that when the dough is placed upon thefeed board, anu carried into the machine by the kneading rollers, thedough is fed up by means of the rod' connecting with the fly wheel andapron roller. At the same time this is being done the knives are set inoperation by the crank shaft, which at each revolution brings them downupon the apron having the dough upon it, and running over the surface ofthe bed plate, to cut the crackers. In doing this the pressure to cutthe crackers cause the springs to give back, thereby preventing t-heapron from being cut by the sudden impingement of the edges of theknives upon' it, and also, in following the knives up after the downstroke, allowing the dough more time to separate from their edges.

As there are many arrangements that may be adopted to effect thisoperation of making the bed plate, and clearer attached therebed-plateresting upon or supported by 'i springs or other equivalent devices, sothat a yielding or receding action is obtained in the bed plate Whileunder the pressure of the cutters, or While the cutters are pressingdown for the purposes and in principle of construction and operationsubstantially as set forth. v

JOHN MCCOLLUM.

Witnesses:

CHARLES S.`BARR1TZ, WVM. H. RIBLET.

[FIRST PniNrin 1912.]

